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Is 3.14 a rational number or an irrational number?
3.14 is the ratio of 314 to 100 so it's rational.
Is 3.14 a rational number or irrational number?
3.14 is rational. It is 314 divided by 100, so it meets the definition of rationality, i.e. the division of two integers, the denominator not being zero.pi, on the other hand, which starts with 3.14, but then continues infinitely, such as 3.1415926535897932384626433832795... (continuing forever...), is irrational and transcendental.pi is irrational because it cannot be expressed as the ratio of two integers, the demoninator not being zero, and pi is transcendental because it cannot be expressed as the root of any polynomial with rational terms.
Why is 3.14 not a rational?
I assume you are talking about 3.14 in terms of the number pi. 3.14 is a common abbreviation of the number pi which is 3.14159265358979323846.... This number is irrational because it goes on infinitely and it cannot be written as a finite fraction. However, 3.14 is actually rational because it can be written as 314/10.I hope this was helpful .(this came from wiki.answers.com)
Is -3.14 an irrational number?
-3.14=(-314/100), so -3.14 is a rational number (since it can be expressed as p/q, with p and q being integers). If you mean -pi (which is approximately -3.14), then it is irrational. pi is irrational (for a proof, which is fairly complicated, see: http://www.lrz-muenchen.de/~hr/numb/pi-irr.html). And an irrational number times a rational number (which -1 is since it can be expressed as -1/1) is irrational. This can be proved by assuming the product is rational. Let x be a rational number, which can be expressed as m/n with m and n integers), and let y be the irrational number. Let S=xy. Assume S is rational, and can be expressed as t/u, with t and u being integers. Then: S=xy t/u=(m/n)y [Divide both sides by m/n, which is the same as multiplying by its reciprocal, n/m) (t*n)/(u*m)=y Since t, n, u, and m are integers, tn and um are integers. (t*n)/(u*m)=y implies y is rational, which is a contradiction. Therefore, xy=S is irrational.
Why isn't 3.14 is a rational numbers?
Whoever told you that 3.14 isn't rational was pulling your chain, and you fell for it. 3.14 is the ratio of 314 to 100, and that means it's rational.
